CVE-2026-96251: Microsoft PowerShell 7.4

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Reliance on untrusted inputs in a security decision in Microsoft PowerShell allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft PowerShell 7.4: from 7.4.0, before 7.4.21 (fixed in 7.4.21)
• Microsoft PowerShell 7.5: from 7.5.0, before 7.5.12 (fixed in 7.5.12)
• Microsoft PowerShell 7.6: from 7.6.0, before 7.6.7 (fixed in 7.6.7)

Published 2026-10-13. Last modified 2026-10-13.